cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A120534 Untouchable 3-almost primes.

Original entry on oeis.org

52, 124, 188, 238, 246, 268, 290, 292, 322, 406, 426, 430, 474, 498, 518, 530, 556, 628, 658, 668, 670, 782, 892, 894, 902, 964, 1002, 1028, 1074, 1102, 1146, 1162, 1222, 1246, 1258, 1266, 1342, 1348, 1388, 1398, 1406, 1506, 1510, 1542, 1578, 1588, 1682, 1732, 1758, 1842, 1844, 1852
Offset: 1

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Author

Jonathan Vos Post, Aug 06 2006

Keywords

Comments

Numbers having 3 prime factors (with multiplicity) and which are not the sum of the aliquot parts of any number.
2 and 5 are almost surely the only untouchable primes.

Links

Crossrefs

Intersection of A005114 and A014612.
Cf. A119379.
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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